JSFiddle - React, Tailwind, and code Playground

HTML

<iframe src="" frameborder="0" id="idIframe"></iframe>

CSS

iframe {
    height: 600px;
    width: 800px;
}

JavaScript

var i = 0;
var urls = [
    '/oskar/c6n7q/',
    '/kizu/zfUyN/',
    '/chriscoyier/Hyg3C/20/',
    '/hakim/Ht6Ym/'
];

var iframe = document.getElementById('idIframe');
iframe.src = urls[i++];
setInterval(function() {
    iframe.src = urls[i++];
    if (i == 4) i = 0;
}, 10000);